<script setup>
import { User, Lock } from "@element-plus/icons-vue";
import { ref } from "vue";
import { ElMessage } from "element-plus";

//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false);
const registerForm = ref();
const loginForm = ref();

//定义表单数据
const registerData = ref({
  username: "",
  password: "",
  rePassword: "",
});

//登录表单数据
const loginData = ref({
  username: "",
  password: "",
});

//确认密码校验
const checkRePassword = (rule, value, callback) => {
  if (value === "") {
    callback(new Error("请再次输入密码"));
  } else if (value !== registerData.value.password) {
    callback(new Error("两次输入密码不一致"));
  } else {
    callback();
  }
};

// 定义表单校验规则
const rules = {
  username: [
    { required: true, message: "请输入用户名", trigger: "blur" },
    { min: 5, max: 16, message: "长度在 5到 16 个字符", trigger: "blur" },
  ],
  password: [
    { required: true, message: "请输入密码", trigger: "blur" },
    { min: 5, max: 16, message: "长度在 5 到 16个字符", trigger: "blur" },
  ],
  rePassword: [{ required: true, validator: checkRePassword, trigger: "blur" }],
};

import { userRegisterService, userLoginService } from "@/api/user.js";
// 调用后台接口完成注册
const register = async () => {
  registerForm.value.validate(async (valid) => {
    if (valid) {
      let result = await userRegisterService(registerData.value);
      // 注册成功
      ElMessage.success(result.message ? result.message : "注册成功");
      // 清空注册表单
      registerData.value = {
        username: "",
        password: "",
        rePassword: "",
      };
      // 切换到登录表单
      isRegister.value = false;
    }
  });
};
// 导入路由
import { useRouter } from "vue-router";
import { useTokenStore } from "@/stores/token.js";
const tokenStore = useTokenStore();
const router = useRouter();

// 调用后台接口完成登录
const login = async () => {
  // 校验登录表单 validate是element-plus提供的方法
  loginForm.value.validate(async (valid) => {
    // valid为true表示校验通过 是element-plus提供的方法
    if (valid) {
      let result = await userLoginService(loginData.value);
      // 登录成功
      ElMessage.success(result.message ? result.message : "登录成功");
      // 把得到的token存储到Pinia中
      // 打印一下token
      console.log(result.data);
      // 把token存储到Pinia中
      tokenStore.setToken(result.data);
      // 登录成功后跳转到首页
      router.push("/layout");
    }
  });
};

// 忘记密码
function ForgetPassword() {
  ElMessage.success("请联系管理员");
}
</script>

<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册表单 -->
      <el-form
        ref="registerForm"
        size="large"
        autocomplete="off"
        v-if="isRegister"
        :model="registerData"
        :rules="rules"
      >
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            :prefix-icon="User"
            placeholder="请输入用户名"
            v-model="registerData.username"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="registerData.password"
          ></el-input>
        </el-form-item>
        <el-form-item prop="rePassword">
          <el-input
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入再次密码"
            v-model="registerData.rePassword"
          ></el-input>
        </el-form-item>
        <!-- 注册按钮 -->
        <el-form-item>
          <el-button
            class="button"
            type="primary"
            auto-insert-space
            @click="register"
          >
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <!-- 登录表单 -->
      <el-form
        ref="loginForm"
        size="large"
        autocomplete="off"
        v-else
        :model="loginData"
        :rules="rules"
        @keyup.enter.native="login"
      >
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            :prefix-icon="User"
            placeholder="请输入用户名"
            v-model="loginData.username"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            name="password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="loginData.password"
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false" @click="ForgetPassword()"
              >忘记密码？</el-link
            >
          </div>
        </el-form-item>
        <!-- 登录按钮 -->
        <el-form-item>
          <el-button
            class="button"
            type="primary"
            auto-insert-space
            @click="login"
            >登录</el-button
          >
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
  height: 100vh;
  background-color: #fff;
  // 背景样式
  .bg {
    background: url("@/assets/logo2.png") no-repeat 40% center / 70vh auto,
      url("@/assets/login_bg.jpg") no-repeat center / cover;
  }
  // 登录注册表单样式
  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;
    .title {
      margin: 0 auto;
    }
    .button {
      width: 100%;
    }
    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>